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Compressor
Accumulator
Wide tube
service
valve
Wide tube
Narrow
tube
service
valve
Narrow tube
Heat exchanger
Heat exchanger
Muffler
Cooling cycle
Indoor unit Outdoor unit
Electric
expansion
valve
M
*1
*1 O.D.1/2"(12.7mm)
...
O.D.5/8"(15.88mm)
...
O.D.
1/4"
(6.35 mm)
H.P.
High pressure
switch
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Indoor Unit CS-KS18NKU
CS-KS24NKU
Outdoor Unit CU-KS18NKU CU-KS24NKU
CU-KS18NKUA CU-KS24NKUA
Insulation of Refrigerant Tubing
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 5/16"(8 mm).
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
Wide tube
Thickness:
Min. 5/16"(8 mm)
Insulation
Narrow tube
Thickness:
Min. 5/16"(8 mm)
IMPORTANT
CAUTION
CS/CU-KS18NKU CU-KS18NKUA
CS/CU-KS24NKU CU-KS24NKUA
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